Synchrotron X-ray Absorption Spectroscopy study of local structure in strontium-doped hydroxyapatite

Bootchanont, Atipong; Sailuam, Wutthigrai; Sutikulsombat, Sarochapat; Temprom, Likit; Chanlek, Narong; Kidkhunthod, Pinit; Suwanna, Pimsiree; Yimnirun, Rattikorn

doi:10.1016/j.ceramint.2017.05.144

Cited by 21 publications

(6 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is non-toxic to host cells, which makes it a great alternative for bone tissue transplantation. 31,34,39,41,43,[45][46][47][48][49][50][51][52] The research claims that strontium demonstrates ferroelectric characteristics when doped in HAp, and it relies upon the amount of strontium present in the HAp component. 42 Strontium-doped HAP not only increases its mechanical strength, biocompatibility, and electrical conductivity, but the manufacturing method also impacts the final qualities of the ceramic.…”

Section: Solid-state Synthesis Methodsmentioning

confidence: 99%

Synthesis of pure and doped nano-calcium phosphates using different conventional methods for biomedical applications: a review

Kawsar,

Sahadat Hossain,

Alam

et al. 2024

J. Mater. Chem. B

View full text Add to dashboard Cite

show abstract

Section: Solid-state Synthesis Methodsmentioning

confidence: 99%

Synthesis of pure and doped nano-calcium phosphates using different conventional methods for biomedical applications: a review

Kawsar,

Sahadat Hossain,

Alam

et al. 2024

J. Mater. Chem. B

View full text Add to dashboard Cite

show abstract

“…[120,163,316,323]. Given the known influence of the apatite composition on the bioactivity of bone tissue [324] (Zn 2+ enhances antibacterial properties [306,318,324],…”

Section: Low Temperature Ion Immobilization and Adsorption Properties...mentioning

confidence: 99%

Structure and Surface Study of Hydroxyapatite‐Based Materials

Costentin

Drouet

Salles

et al. 2022

Design and Applications of Hydroxyapatite‐Based Catalysts

View full text Add to dashboard Cite

In addition to designing catalytic materials ever more active and selective, the emergence of new classes of greener catalysts remains very challenging. The apatite family system with hydroxyapatite (HA) structure appears as a good candidate for catalysis due to its ecocompatibility properties, its sorption ability toward organic molecules, and its tunable composition resulting into modulation of its surface properties. Depending on their mode of preparation, these inexpensive and environment-friendly apatitic calcium phosphates exhibit properties of relevance to catalysis, such as large surface area and various morphologies.However, most studies focused so far on the catalytic performance of these compounds, while the study of structure-reactivity relationships required for rationalized optimization remains rather limited. This chapter aims at providing tools to help understand the catalytic behavior of apatite compounds, giving details about their structure, surface properties, and reactivity; this will include both stoichiometric and nonstoichiometric compounds, sometimes biomimetic and potentially substituted. A special attention is dedicated to recent advances in the characterization of their structural properties (bulk and surface/interphase) that have a strong impact on their reactivity, through both experimental and computational approaches to study the mechanisms occurring in the structure or at the crystals surface, as well as thermodynamic and dynamical properties. Remaining characterization challenges for apatite-based catalysts will also be discussed. 1.an influence on the charges carried by the cation and on the related strength of the Ca-O interaction [127], which results in different adsorption properties with guest molecules. To go further, quantum calculations coupled with NMR (Nuclear Magnetic Resonance) resultsshowed the impact of the presence of OHions on the migration of Ca 2+ as well as the rotation of PO4 3groups [128]. In the hydroxyapatite structure, phosphate ions PO4 3are the largest components of the structure. As such, they provide a primary backbone via 3D compact-like piling, generating interstitial sites for the other ions of the structure. Metal cations such as Ca 2+ occupy two types of crystallographic sites, denoted Ca1 (4 sites per unit formula) and Ca2 (6 sites per unit formula), see Figure 2. Ca1 sites are localized along the trigonal axis with the coordinates (1/4, 3/4, 1/2) and (3/4, 1/4, 1/2), forming linear columns along the c-axis. Ca2 sites in contrast form equilateral triangles at z = 1/4 and z = 3/4 on the sixfold screw (senary) 63 axes. Adjacent Ca1 and Ca2 sites are linked through shared oxygen atoms from PO4 tetrahedra. Ca1 sites generate (distorted) polyhedra where the metal ion is in ninefold coordination, while in Ca2 sites it is in sevenfold coordination.The Ca2 triangles contribute to delimit so-called "apatitic channels" where ions such as OHare axially located (Figure 3) [116,120]. In calcium hydroxyapatite, the Ca2 triangular sites correspond to the narrow...

show abstract

“…A HAp inclui dois tipos de cátions de cálcio, chamados Ca 1 e Ca 2 . Os átomos de cálcio Ca 1 estão localizados nas bordas de uma célula unitária hexagonal, perto do Ca em torno grupos -PO 4 capaz de se ligar com os tecidos vivos e ósseas associadas com ossos fortes, enquanto os átomos de cálcio Ca 2 formam triângulos equilaterais com a coluna de grupos hidroxila estruturais no meio (Bootchanont et al, 2017). Os grupos fosfato encontram-se na parte externa do arranjo hexagonal, e sua estrutura tetraédrica exclusiva torna a hidroxiapatita estável (Chen et al, 2018).…”

Section: Novas Perspectivasunclassified